ASTROSAT CZTI

Data Quality Report

Orbit 24722

Creation date: 2024-06-27T19:09:09.351654
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1T03_194T01_9000003620_24722cztM0_level2.evt modeM0/AS1T03_194T01_9000003620_24722cztM0_level2_quad_clean.evt
Size (bytes)494,127,36073,134,720
Size471.2 MB 69.7 MB
Events in quadrant A3,504,614459,475
Events in quadrant B3,551,574463,697
Events in quadrant C3,657,805429,870
Events in quadrant D3,828,371426,706

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142532
B0144242
C0147932
D0154272

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6230641.027287%
B6230831.332263%
C62301051.685393%
D6230731.171750%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7545 6230 0 0 0.00% 0.00%
B 7545 6230 0 0 0.00% 0.00%
C 7545 6230 4 4 0.05% 0.06%
D 7545 6230 37 37 0.49% 0.59%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 13 254 9778 49.97 908 895 177.7
A 0 226 7747 38.55 908 895 177.7
A 3 137 7575 37.58 908 895 177.7
B 7 202 32046 187.08 892 875 166.6
B 0 189 26005 150.83 892 875 166.6
B 12 111 20002 114.8 892 875 166.6
C 14 238 136877 702.17 841 850 193.7
C 7 247 123163 631.38 841 850 193.7
C 3 233 71690 365.67 841 850 193.7
D 1 52 375258 1834.03 860 837 204.2
D 8 195 148356 722.6 860 837 204.2
D 7 238 36031 172.39 860 837 204.2

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter